St. John, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. John, a city in Rolette County, North Dakota.
Today
68°F
Mostly Sunny
Mostly sunny, with a high near 68. West wind 8 to 16 mph, with gusts as high as 25 mph.
7-day forecast for St. John
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Mostly Sunny | 8 to 16 mph W | 0% |
| Tonight | 51°F | Mostly Clear | 7 to 14 mph W | 0% |
| Wednesday | 77°F | Mostly Sunny | 12 to 18 mph SW | 9% |
| Wednesday Night | 55°F | Slight Chance Showers And Thunderstorms | 9 to 17 mph W | 16% |
| Thursday | 79°F | Sunny | 10 to 16 mph W | 1% |
| Thursday Night | 56°F | Mostly Clear | 8 to 14 mph NW | 4% |
| Friday | 76°F | Sunny | 8 to 14 mph NW | 4% |
| Friday Night | 54°F | Partly Cloudy | 5 to 13 mph N | 8% |
| Saturday | 76°F | Mostly Sunny | 5 to 12 mph N | 8% |
| Saturday Night | 54°F | Mostly Clear | 5 to 12 mph N | 14% |
| Sunday | 74°F | Mostly Sunny | 6 to 9 mph N | 14% |
| Sunday Night | 55°F | Chance Rain Showers | 5 to 10 mph NE | 29% |
| Monday | 74°F | Chance Rain Showers | 5 to 9 mph NE | 29% |
| Monday Night | 55°F | Slight Chance Rain Showers | 5 to 10 mph NE | 19% |
Forecast source: National Weather Service (api.weather.gov) for St. John (48.944, -99.713). Updated through the day.
Growing snapshot for St. John
Last spring frost
May 19
First fall frost
Sep 24
Growing season
126 days
Hardiness zone
3b
More local growing data for St. John: nearby ZIP 58369 weather · frost dates · planting calendar · North Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Belcourt Keya Radio, Nd (8.6 mi from St. John). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.